2016 MERCEDES-BENZ C CLASS fuel

Unlocking and opening doors from
the inside You can open a door from inside the vehicle
even if it has been locked. You can only open the
rear doors from inside the vehicle if they are not
secured by the child-proof locks ( Y
page 67). If
the vehicle has been locked with the SmartKey
or with KEYLESS-GO, opening a door from the
inside will trigger the anti-theft alarm system.
Switch off the alarm ( Y
page 79).
X
To unlock and open a front door: pull door
handle D .
If the door is locked, locking knob C pops up.
The door is unlocked and opens. X
To unlock a rear door: pull door handle D .
Locking knob C pops up and the door
unlocks. X
To open a rear door: pull door handle D
again.
The door opens.
Centrally locking and unlocking the
vehicle from the inside You can centrally lock and unlock the vehicle
from the inside. The switches are on the driver’s
door. X
To unlock: press button C .X
To lock: press button D .
When the front-passenger door is closed, the
vehicle is locked.
Meanwhile, the fuel filler flap will not be locked
or unlocked.
You cannot unlock the vehicle centrally from the
inside if the vehicle has been locked with the
SmartKey or KEYLESS-GO.
The doors can be opened from the inside. You
can only open the rear doors from inside the
vehicle if they are not secured by the child-proof
locks ( Y
page 67).
If the vehicle has been locked with the SmartKey
or with KEYLESS-GO, opening a door from the
inside will trigger the anti-theft alarm system.
Switch off the alarm ( Y
page 79).
When a locked door is opened from inside the
vehicle, the previous unlocking process will be
acknowledged if the vehicle: R
has been locked with the locking button for
the central locking or R
has been locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside is
unlocked.88
Doors
Opening and closing

vehicle, even if you only leave it for a short time.
Pay attention to the important safety notes. X
Depress the brake pedal and keep it
depressed. X
Press the Start/Stop button once
( Y
page 146).
The engine starts.
Starting procedure via smartphone Observe the important safety notes on starting
the engine ( Y
page 148).
You can also start your engine via your smart-
phone from outside the vehicle. In this case, the
previously selected climate control setting is
activated. In this way you can cool or heat the
interior of the vehicle before starting the jour-
ney.
Only start the engine via your smartphone if it is
safe to start and run the engine where your vehi-
cle is parked.
Observe the legal stipulations in the area where
your vehicle is parked. Engine start via smart-
phone may be limited to certain countries or
regions.
You can execute a maximum of two consecutive
starting attempts via your smartphone. If you
insert the SmartKey into the ignition lock, you
can carry out two more starting attempts.
Once you have started the engine, you can
switch the engine off via your smartphone at any
time.
You can only start the engine via your smart-
phone if: R
the SmartKey is in the ignition lock R
park position P is selectedR
the accelerator pedal is not depressed R
the anti-theft alarm system is not activated R
the panic alarm is not activated R
the hazard warning lamps are switched off R
the hood is closed. R
the doors are closed and locked R
the windows and sliding sunroof are closed
Also make sure that: R
the fuel tank is sufficiently filled R
the starter battery is sufficiently charged
G WARNING
Limbs could be crushed or trapped if the
engine is started unintentionally during ser- vice or maintenance work. There is a risk of
injury.
Always secure the engine against uninten-
tional starting before carrying out mainte-
nance or repair work.
Make sure that the engine cannot be started via
your smartphone before carrying out mainte-
nance or repairs. You can prevent an engine
start via your smartphone, for example, if you: R
switch on the hazard warning lamps R
do not lock the doors R
open the hood.
Pulling away
General notes
G WARNING
If the engine speed is above the idling speed
and you engage transmission position D or R ,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position D or R ,
always firmly depress the brake pedal and do
not simultaneously accelerate.
Depress the accelerator carefully when pulling
away.
The vehicle locks centrally once you have pulled
away. The locking knobs in the doors drop down.
You can open the doors from the inside at any
time.
You can also deactivate the automatic locking
feature, see the Digital Operator's Manual.
It is only possible to shift the transmission from
position P to the desired position if you depress
the brake pedal. Only then is the parking lock
released. If you do not depress the brake pedal,
the DIRECT SELECT lever can still be moved but
the parking lock remains engaged.
i Upshifts take place at higher engine speeds
after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brake ( Y
page 178).Driving 149
Driving and parking Z

Hill start assist Hill start assist helps you when pulling away for-
wards or in reverse on an uphill gradient. It holds
the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and to
depress it before the vehicle begins to roll.
G WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if: R
you are pulling away on a level road or on a
downhill gradient. R
the transmission is in position N .R
the electric parking brake is applied. R
ESP ®
is malfunctioning.
ECO start/stop function (all vehicles
except PLUG ‑ IN HYBRID)
Introduction This section describes the ECO start/stop func-
tion for all vehicles except PLUG-IN HYBRID
vehicles. Information on the ECO start/stop
function on PLUG-IN HYBRID vehicles
( Y
page 231).
The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
The engine starts automatically when the driver
wants to pull away again. The ECO start/stop
function thereby helps you to reduce the fuel
consumption and emissions of your vehicle.
Important safety notes
G WARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
C
ECO start/stop display
The ECO start/stop function is activated when-
ever you start the engine using the SmartKey or
the Start/Stop button.
If the engine has been switched off automati-
cally by the ECO start/stop function, the

Problems with the engine Problem
Possible causes/consequences and P Solutions
The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics. R
There is a malfunction in the fuel supply.
Before attempting to start the engine again: X
Turn the SmartKey back to position 0 in the ignition lock.
or X
Press the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out. X
Try to start the engine again ( Y
page 148). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts: X
Consult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged. X
Jump-start the vehicle ( Y
page 352).
If the engine does not start despite attempts to jump-start it: X
Consult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high. X
Try to start the engine again ( Y
page 148).
If the engine still does not start: X
Consult a qualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system. X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. X
Have the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †). The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 333). Observe the warning notes
as you do so and add coolant if necessary. Driving 153
Driving and parking Z

Drive program S+ (Spor t Plus)Drive progra m S+ is characterized by th e fol-
lowing: R
th e vehicl e exhibits particularl y sport y drivin g
characteristics .R
th e vehicl e pullin g away in first gear .R
th e automati c transmissio n shiftin g up later.
th e fue l consumption possibl y bein g higher as
a result of th e later automati c transmissio n
shift points .R
th e suspensio n exhibits particularl y stiff
springin g and dampin g setting s (vehicles wit h
AIRMATIC) .R
th e ECO start/sto p function is no t available.
Drive program S (Sport)Drive progra m S is characterized by th e follow-
ing: R
th e vehicl e exhibits sport y drivin g character-
istics .R
th e vehicl e pullin g away in first gear .R
th e automati c transmissio n shiftin g up later.
th e fue l consumption possibl y bein g higher as
a result of th e later automati c transmissio n
shift points .R
th e suspensio n exhibits har d springin g and
dampin g setting s (vehicles wit h AIRMATIC) .
Drive program C (Comfort)Drive progra m C is characterized by th e follow-
ing: R
th e vehicl e deliver s comfortable, economical
handlin g characteristics .R
th e vehicl e pullin g away mor e gentl y i n
forwar d and revers e gears, unless th e accel-
erato r peda l is depressed fully.R
th e vehicl e havin g improved drivin g stability,
fo r exampl e on slipper y roa d surfaces.R
optimal fue l consumption resultin g from th e
automati c transmissio n shiftin g up sooner.
The vehicl e is driven in th e low engin e speed
range and th e wheels are less likely to spin . Drive program E (Economy)Drive progra m E is characterized by th e follow-
ing: R
th e vehicl e exhibits comfortable, economical
handlin g characteristics .R
th e vehicl e pullin g away mor e gentl y in
forwar d and revers e gears, unless th e accel-
erato r peda l is depressed fully. R
th e vehicl e havin g improved drivin g stability,
fo r exampl e on slipper y roa d surfaces.R
optimal fue l consumption resultin g from th e
automati c transmissio n shiftin g up sooner.
The vehicl e is driven in th e low engin e speed
range and th e wheels are less likely to spin .R
during deceleration , th e engin e is disconnec-
te d from th e drive train . The vehicl e uses
kineti c energ y and consumes less fue l (over-
run mode). R
th e performanc e of air-conditionin g system
and heatin g are reduced.
Mercedes-AMG vehicles
Drive program RACE (S ‑ MODEL)The RACE drive progra m is characterized by th e
following : R
th e vehicl e exhibits drivin g characteristics
suitable fo r th e racetrack. R
all vehicl e systems are set fo r maximum
sportiness . R
th e gearshift recommendation gives you
information fo r slowly warmin g up th e drive
assemblies and fo r adopting a fuel-efficien t
drivin g style ( Y
page 161). You can follow th e
gearshift recommendation s at all times and
shift gear accordingly usin g th e steerin g
whee l paddl e shifters . On th e basi s of th e
gearshift recommendation , usin g th e steerin g
whee l paddl e shifters , you can optimiz e th e
drive train and engin e operatin g mod e at any
time. R
if you hav e selected a gear manually, this will
be maintaine d until th e vehicl e speed increa-
ses or decreases dramatically. R
th e vehicl e pullin g away in first gear .R
th e automati c transmissio n shiftin g up later.
th e fue l consumption possibl y bein g higher as
a result of th e later automati c transmissio n
shift points .160
Automatic transmission
Driving and parking

R
the suspension exhibits particularly stiff
springing and damping settings (vehicles with
AIRMATIC). R
gliding mode is not available. R
the ECO start/stop function is not available.
Drive program S+ (Sport Plus) Drive program S+ is characterized by the fol-
lowing: R
the vehicle exhibits particularly sporty driving
characteristics. R
the vehicle pulling away in first gear. R
the automatic transmission shifting up later.
the fuel consumption possibly being higher as
a result of the later automatic transmission
shift points. R
the suspension exhibits particularly stiff
springing and damping settings (vehicles with
AIRMATIC). R
gliding mode is not available. R
the ECO start/stop function is not available.
Drive program S (Sport) Drive program S is characterized by the follow-
ing: R
the vehicle exhibits sporty driving character-
istics. R
the vehicle pulling away in first gear. R
the automatic transmission shifting up later.
the fuel consumption possibly being higher as
a result of the later automatic transmission
shift points. R
the suspension exhibits hard springing and
damping settings (vehicles with AIRMATIC). R
gliding mode is not available. R
the ECO start/stop function is not available.
Drive program C (Comfort)
Drive program C is characterized by the follow-
ing: R
the vehicle delivers comfortable, economical
handling characteristics. R
the vehicle pulling away more gently in
forward and reverse gears, unless the accel-
erator pedal is depressed fully. R
the vehicle having improved driving stability,
for example on slippery road surfaces. R
optimal fuel consumption resulting from the
automatic transmission shifting up sooner. The vehicle is driven in the low engine speed
range and the wheels are less likely to spin. R
gliding mode is available. R
the ECO start/stop function is available.
Drive program I (Individual) In drive program I the following properties of the
drive program can be selected: R
the drive (engine management) R
the transmission management R
ESP ®
( Y
page 73) R
the suspension R
activation of the exhaust flap
Information about configuring drive program I
with the multimedia system can be found in the
Digital Operator's Manual.
i To permanently select the gears in drive
program I using the steering w heel paddles,
s elect the M (manual) setting for the trans-
mission.
Manual gear shifting
General notes You can change gear yourself using the steering
wheel paddle shifters. The transmission must be
in position D .
Depending on which paddle shifter is pulled, the
automatic transmission immediately shifts into
the next gear down or up, if permitted.
Mercedes-AMG vehicles: to use manual shift-
ing, you have two options: R
temporary setting R
permanent setting
If you activate manual gearshifting, the multi-
function display will show the current gear
instead of transmission position D .
If manual gearshifting is deactivated, the gears
will be selected automatically.Automatic transmission 161
Driving an d parking Z

Temporary setting X
To activate: shift the DIRECT SELECT lever to
position D .X
Pull steering wheel paddle shifter C or D .
Further information on activating manual gear-
shifting on PLUG-IN HYBRID vehicles
( Y
page 229).
Temporary setting will be active for a certain
amount of time. Under certain conditions the
minimum amount of time is extended, e.g. in the
case of lateral acceleration, during an overrun
phase or when driving on steep terrain. X
To deactivate: pull steering wheel paddle
shifter D and hold it in place.
or X
Use the DIRECT SELECT lever to switch the
transmission position.
or X
Use the DYNAMIC SELECT switch to change
the drive program.
Permanent setting (Mercedes-AMG
vehicles) X
To activate: shift the DIRECT SELECT lever to
position D . X
Press button C .
Indicator lamp D lights up.X
To deactivate: press button C .
or X
If position D (automatic transmission) is
selected for the transmission in drive pro-
gram I : shift to drive program I with the
DYNAMIC SELECT switch.
Indicator lamp D goes out.
Shifting gears
! Mercedes-AMG vehicles: the automatic
transmission does not shift up automatically
even when the engine limiting speed for the
current gear is reached. When the engine lim-
iting speed is reached, the fuel supply is cut to
prevent the engine from overrevving. Always
make sure that the engine speed does not
reach the red area of the tachometer. There is
otherwise a risk of engine damage.
X
To shift up: pull steering wheel paddle
shifter D .
The automatic transmission shifts up to the
next gear.
All vehicles (except Mercedes-AMG vehi-
cles): if the maximum engine speed on the
currently engaged gear is reached and you
continue to accelerate, the automatic trans-
mission automatically shifts up in order to
prevent engine damage. X
To shift down: pull steering wheel paddle
shifter C .
The automatic transmission shifts down to
the next gear.
Automatic down shifting occurs when coast-
ing.162
Automatic transmission
Driving an d parking

If the engine exceeds the maximum engine
speed when shifting down, the automatic
transmission protects against engine damage
by not shifting down.
Shift recommendation
The gearshift recommendations assist you in
adopting an economical driving style. The rec-
ommended gear is shown in the multifunction
display. X
Shift to recommended gear D according to
gearshift recommendation C when shown in
the multifunction display of the instrument
cluster.
Upshifting (Mercedes-AMG vehicles)
! The automatic transmission does not shift
up automatically even when the engine limit-
ing speed for the current gear is reached.
When the engine limiting speed is reached,
the fuel supply is cut to prevent the engine
from overrevving. Always make sure that the
engine speed does not reach the red area of
the tachometer. There is otherwise a risk of
engine damage.
Before the engine speed reaches the red area,
an upshift indicator will be shown in the multi-
function display. X
When message C appears in the multifunc-
tion display, pull on the right-hand steering
wheel paddle shifter. Kickdown X
For maximum acceleration, depress the
accelerator pedal beyond the pressure point.
The automatic transmission shifts to a lower
gear depending on the engine speed. X
Shift back up once the desired speed is
reached.
During kickdown, you cannot shift gears using
the steering wheel paddle shifters.
If you apply full throttle, the automatic trans-
mission shifts up to the next gear when the
maximum engine speed is reached. This pre-
vents the engine from overrevving.
Mercedes-AMG vehicles: kickdown is only
possible in the temporary setting.Automatic transmission 163
Driving and parking Z